I like Pinmoors, I bleed a lot less when I use them!
I tried the "DIY" version with the backer rod stuff, and it sort of worked, but the DIY versions don't stay on nearly as well as the real deal does. I would still get stabbed because the backer rod stuff would come off of my pins. Real Pinmoors grip the pin a lot better and stay put.
Someone here said that Pinmoors don't work well with the yellow-headed quilter's pins but I disagree - those are the pins I use exclusively with my Pinmoors and they work great! In my experience, the thinner glass-headed pins work OK but are prone to bending when you poke them into the Pinmoor. The yellow headed pins are stiffer and work best, IMO.
I never liked using safety pins - they're cumbersome and make my fingers hurt, even when I bought the curved ones and tried the quick clip tool thingy. Plus the shafts are so much thicker than my yellow-headed pins; it's harder to get the pins through all 3 layers.
I usually glue baste with Elmer's now, but when I do need to pin something, I use Pinmoors every time.